For those who may have never seen it, this is what Thunderbird almost looked like:
Rather busy design but not as stereotypical as his final look.
Looks a lot like Peacemaker mixed with one of the old Atom costumes.
I've often said that, as awesome an artist as George Perez is, he's not the best costume designer. But this unused Captain Atom design is pretty decent:
More of Laura Kinney's new Wolverine costume: